Import of Linus's Linux 1.1.68

1 files changed, 123 insertions, 0 deletions

diff --git a/include/linux/minix_fs.h b/include/linux/minix_fs.h
new file mode 100644
index 000000000..971a50d8a
--- /dev/null
+++ b/include/linux/minix_fs.h
@@ -0,0 +1,123 @@
+#ifndef _LINUX_MINIX_FS_H
+#define _LINUX_MINIX_FS_H
+
+/*
+ * The minix filesystem constants/structures
+ */
+
+/*
+ * Thanks to Kees J Bot for sending me the definitions of the new
+ * minix filesystem (aka V2) with bigger inodes and 32-bit block
+ * pointers. It's not actually implemented yet, but I'll look into
+ * it.
+ */
+
+#define MINIX_ROOT_INO 1
+
+/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
+#define MINIX_LINK_MAX	250
+
+#define MINIX_I_MAP_SLOTS	8
+#define MINIX_Z_MAP_SLOTS	8
+#define MINIX_SUPER_MAGIC	0x137F		/* original minix fs */
+#define MINIX_SUPER_MAGIC2	0x138F		/* minix fs, 30 char names */
+#define NEW_MINIX_SUPER_MAGIC	0x2468		/* minix V2 - not implemented */
+#define MINIX_VALID_FS		0x0001		/* Clean fs. */
+#define MINIX_ERROR_FS		0x0002		/* fs has errors. */
+
+#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
+
+struct minix_inode {
+	unsigned short i_mode;
+	unsigned short i_uid;
+	unsigned long i_size;
+	unsigned long i_time;
+	unsigned char i_gid;
+	unsigned char i_nlinks;
+	unsigned short i_zone[9];
+};
+
+/*
+ * The new minix inode has all the time entries, as well as
+ * long block numbers and a third indirect block (7+1+1+1
+ * instead of 7+1+1). Also, some previously 8-bit values are
+ * now 16-bit. The inode is now 64 bytes instead of 32.
+ */
+struct new_minix_inode {
+	unsigned short i_mode;
+	unsigned short i_nlinks;
+	unsigned short i_uid;
+	unsigned short i_gid;
+	unsigned long i_size;
+	unsigned long i_atime;
+	unsigned long i_mtime;
+	unsigned long i_ctime;
+	unsigned long i_zone[10];
+};
+
+/*
+ * minix super-block data on disk
+ */
+struct minix_super_block {
+	unsigned short s_ninodes;
+	unsigned short s_nzones;
+	unsigned short s_imap_blocks;
+	unsigned short s_zmap_blocks;
+	unsigned short s_firstdatazone;
+	unsigned short s_log_zone_size;
+	unsigned long s_max_size;
+	unsigned short s_magic;
+	unsigned short s_state;
+};
+
+struct minix_dir_entry {
+	unsigned short inode;
+	char name[0];
+};
+
+#ifdef __KERNEL__
+
+extern int minix_lookup(struct inode * dir,const char * name, int len,
+	struct inode ** result);
+extern int minix_create(struct inode * dir,const char * name, int len, int mode,
+	struct inode ** result);
+extern int minix_mkdir(struct inode * dir, const char * name, int len, int mode);
+extern int minix_rmdir(struct inode * dir, const char * name, int len);
+extern int minix_unlink(struct inode * dir, const char * name, int len);
+extern int minix_symlink(struct inode * inode, const char * name, int len,
+	const char * symname);
+extern int minix_link(struct inode * oldinode, struct inode * dir, const char * name, int len);
+extern int minix_mknod(struct inode * dir, const char * name, int len, int mode, int rdev);
+extern int minix_rename(struct inode * old_dir, const char * old_name, int old_len,
+	struct inode * new_dir, const char * new_name, int new_len);
+extern struct inode * minix_new_inode(const struct inode * dir);
+extern void minix_free_inode(struct inode * inode);
+extern unsigned long minix_count_free_inodes(struct super_block *sb);
+extern int minix_new_block(struct super_block * sb);
+extern void minix_free_block(struct super_block * sb, int block);
+extern unsigned long minix_count_free_blocks(struct super_block *sb);
+
+extern int minix_bmap(struct inode *,int);
+
+extern struct buffer_head * minix_getblk(struct inode *, int, int);
+extern struct buffer_head * minix_bread(struct inode *, int, int);
+
+extern void minix_truncate(struct inode *);
+extern void minix_put_super(struct super_block *);
+extern struct super_block *minix_read_super(struct super_block *,void *,int);
+extern void minix_write_super(struct super_block *);
+extern int minix_remount (struct super_block * sb, int * flags, char * data);
+extern void minix_read_inode(struct inode *);
+extern void minix_write_inode(struct inode *);
+extern void minix_put_inode(struct inode *);
+extern void minix_statfs(struct super_block *, struct statfs *);
+extern int minix_sync_inode(struct inode *);
+extern int minix_sync_file(struct inode *, struct file *);
+
+extern struct inode_operations minix_file_inode_operations;
+extern struct inode_operations minix_dir_inode_operations;
+extern struct inode_operations minix_symlink_inode_operations;
+
+#endif /* __KERNEL__ */
+
+#endif